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Striga hermonthica  is an obligate, root parasite, that limits cereal production in sub-Saharan Africa. Successful control depends on eliminating its seed reserves in soil, thereby preventing parasitism. Two experiments were conducted to evaluate the effects of salinity on germination traits and seedling growth of sorghum (cultivar Wad Ahmed) and  S. hermonthica . The experiments were conducted in a factorial arrangement on the basis of completely randomized design (CRD) with 4 replications. In the first experiment, sorghum height, leaf area, and shoot and root dry weights were examined. The results displayed that, with increasing salinity level, leaf area and dry biomass were increased, while the height was decreased. In the second experiment,  Striga  germination and haustorium initiation percentages were examined. Among all salts, C 2 H 4 O 2 ·NH 3  inhibited  Striga  germination (0–15%) during conditioning or (0–25%) at germination compared to the control (75%). However, salt MgSO 4 ·7H 2 O improved germination during conditioning up to 70%, while during germination CH 3 COONa·3H 2 O recorded 65% germination. Regarding haustoria initiation, results showed that C 2 H 4 O 2 ·NH 3  at all concentrations inhibits haustorium formation by 100%, while CH 3 COONa·3H 2 O at 10 µM improved haustorium formation up to 64% but still below the control (70%). Osmotic potential may significantly affect germination and radicle elongation of the parasitic weed.

Effect of Seed Priming on Early Development of Sorghum (Sorghum bicolor L. Moench) and Striga hermonthica (Del.) Benth